"It demonstrates our own fate when the Sun approaches the end of its life in about 5 billion years time," Dr Watson said.

"It poses questions about how large planets form, because the host star contains few elements heavier than hydrogen and helium, making it the only star of this type, known to have planets.

"That could mean the planet was captured by the star, or there are things about planetary formation which we don't yet understand."

Dr Watson says because the planetary system is part of a galaxy that formed at about the same time as the Milky Way, and has since been consumed by our galaxy, it provides another insight into our solar system's future.

"That's because our galaxy will collide with Andromeda in 3 to 5 billion years time."

Free trade is the oldest argument in federal politics and the issue that literally defined the federation era but opposition exists to the TPP, courtesy of the Investor-State Dispute Resolutions clause.